Particles of nuclear origin carrying rapidly labelled RNA.
D002247:Carbon Isotopes; D002467:Cell Nucleus / Q000378:metabolism*; D002499:Centrifugation, Density Gradient; D046508:Culture Techniques; D003593:Cytoplasm / Q000032:analysis; D007930:Leucine / Q000378:metabolism; D008970:Molecular Weight; D009698:Nucleoproteins / Q000032:analysis; D012313:RNA / Q000378:metabolism*; D014316:Tritium; D014529:Uridine / Q000378:metabolism
D002247:Carbon Isotopes; D009698:Nucleoproteins; D014316:Tritium; D012313:RNA; D007930:Leucine; D014529:Uridine